miminum width & height for a window

HI,
I use Vassal 3.2.17 on a PC.

In my module, I use :

[code]

Chart Window Menu
|- Tabbed Panel → Map → Map Window → Map Boards → Board
→ Map → Map Window → Map Boards → Board
→ Map → Map Window → Map Boards → Board[/code]

When I clic on the “Chart Windo Menu” button, a window is opened.

I would like to determine a minimum X and Y (width & height) for this window : is-it possible ?
I can’t find how…

Perhaps I must import a class ? but I don’t know to write it…

thank you for your help.
Jean-Paul

a precision :
module opened, I clic on the “Chart Windo Menu” button (included in the toolbar).